Add chickpeas, cottage cheese, tahini, lemon juice, garlic, salt, and dried parsley to your food processor.
Blend on high until completely smooth. As needed, pulse the food processor and add water (1 Tbsp at a time) to reach your desired consistency. Depending on the strength of your food processor, it may take up to 3-minutes to get it completely smooth.
Transfer hummus to a storage container or serving dish. Right before serving, top with a drizzle of olive oil and a sprinkle of fresh parsley, if desired. Enjoy with chopped veggies, sliced pita, or your favorite crackers!